Yep, your cat is clogged. It has never happened to me, but a buddy of mine was in a camaro and it happened to him. He pulled over like you did, but he pulled off the road into some weeds that had been bush-hogged about a week or two before. Well, the car dang near burnt completely. I would say that is your problem.
95, 4" susp. lift, 33x12.50 ProComp M/T's, custom square tube bumpers, , energy bushings, 4.0 HO, everything stock, 1" or 2" body lift and who knows what else coming soon.